/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.view;

import com.example.android.apis.Shakespeare;

import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;

/**
 * A list view example where the data comes from a custom ListAdapter
 */
public class List4 extends ListActivity {

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		// Use our own list adapter
		setListAdapter(new SpeechListAdapter(this));
	}

	/**
	 * A sample ListAdapter that presents content from arrays of speeches and
	 * text.
	 * 
	 */
	private class SpeechListAdapter extends BaseAdapter {
		public SpeechListAdapter(Context context) {
			mContext = context;
		}

		/**
		 * The number of items in the list is determined by the number of
		 * speeches in our array.
		 * 
		 * @see android.widget.ListAdapter#getCount()
		 */
		public int getCount() {
			return Shakespeare.TITLES.length;
		}

		/**
		 * Since the data comes from an array, just returning the index is
		 * sufficent to get at the data. If we were using a more complex data
		 * structure, we would return whatever object represents one row in the
		 * list.
		 * 
		 * @see android.widget.ListAdapter#getItem(int)
		 */
		public Object getItem(int position) {
			return position;
		}

		/**
		 * Use the array index as a unique id.
		 * 
		 * @see android.widget.ListAdapter#getItemId(int)
		 */
		public long getItemId(int position) {
			return position;
		}

		/**
		 * Make a SpeechView to hold each row.
		 * 
		 * @see android.widget.ListAdapter#getView(int, android.view.View,
		 *      android.view.ViewGroup)
		 */
		public View getView(int position, View convertView, ViewGroup parent) {
			SpeechView sv;
			if (convertView == null) {
				sv = new SpeechView(mContext, Shakespeare.TITLES[position],
						Shakespeare.DIALOGUE[position]);
			} else {
				sv = (SpeechView) convertView;
				sv.setTitle(Shakespeare.TITLES[position]);
				sv.setDialogue(Shakespeare.DIALOGUE[position]);
			}

			return sv;
		}

		/**
		 * Remember our context so we can use it when constructing views.
		 */
		private Context mContext;
	}

	/**
	 * We will use a SpeechView to display each speech. It's just a LinearLayout
	 * with two text fields.
	 * 
	 */
	private class SpeechView extends LinearLayout {
		public SpeechView(Context context, String title, String words) {
			super(context);

			this.setOrientation(VERTICAL);

			// Here we build the child views in code. They could also have
			// been specified in an XML file.

			mTitle = new TextView(context);
			mTitle.setText(title);
			addView(mTitle, new LinearLayout.LayoutParams(
					LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));

			mDialogue = new TextView(context);
			mDialogue.setText(words);
			addView(mDialogue, new LinearLayout.LayoutParams(
					LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
		}

		/**
		 * Convenience method to set the title of a SpeechView
		 */
		public void setTitle(String title) {
			mTitle.setText(title);
		}

		/**
		 * Convenience method to set the dialogue of a SpeechView
		 */
		public void setDialogue(String words) {
			mDialogue.setText(words);
		}

		private TextView mTitle;
		private TextView mDialogue;
	}
}
